Unusual spirocyclic macroline alkaloids, nitrogenous derivatives, and a cytotoxic bisindole from Alstonia |
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| Authors: | Toh-Seok Kam Yeun-Mun Choo |
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| Affiliation: | a Department of Chemistry, University of Malaya, Pantai Valley, 50603 Kuala Lumpur, Malaysia
b The Kitasato Institute, 5-9-1 Shirokane, Minato-ku, Tokyo 108, Japan |
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| Abstract: | The bark extract of the Malayan A. macrophylla provided several novel indoles with unprecedented carbon skeletons, an unusual nitrogenous compound, a cytotoxic bisindole, several new macroline alkaloids, in addition to other known alkaloids. The structures of the new compounds were established by spectroscopic analysis. |
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| Keywords: | Alkaloids NMR Plants |
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